fix(material/list): list item truncates on narrow screen widths

[essjay05]

Fixes issue with Angular Components List component where the list item truncates on narrow screen widths (ie. mobile screens). Removes white-space wrap style and adds some height to primary lines for readability.

Before screenshot After screenshot

Fixes b/291296866

[github-actions[bot]]

Deployed dev-app for 9e08fccd970aabab8cc63fdaaf05afd6903ca943 to: https://ng-dev-previews-comp--pr-angular-components-29033-dev-ty3sw382.web.app

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